bbsData: BBS data by state for two timeslices

In betapart: Partitioning Beta Diversity into Turnover and Nestedness Components

Description

The data consists of binary presence/absence matrices for 569 bird species across 49 US states for two time slices (1980 - 1985 and 2000 - 2005). Only species (identified by AOU number) recorded during both time periods are included. The data are taken from the North American Breeding Bird Survey dataset and from a version of the database downloaded in May 2009.

Usage

data(bbsData)

Format

Two matrices (bbs1980 and bbs2000) of identical structure showing the presence/absence of the species as binary data.

state

US states by USPS two letter codes.

aou

Species identity by AOU species ID numbers.

Source

http://www.pwrc.usgs.gov/BBS/

Examples

data(bbsData)
str(bbs1980)
str(bbs2000)

Example output

 int [1:49, 1:569] 0 0 0 0 1 1 0 0 0 0 ...
 - attr(*, "dimnames")=List of 2
  ..$ state: chr [1:49] "AL" "AK" "AZ" "AR" ...
  ..$ aou  : chr [1:569] "12" "20" "30" "40" ...
 int [1:49, 1:569] 0 0 0 0 1 0 0 0 0 0 ...
 - attr(*, "dimnames")=List of 2
  ..$ state: chr [1:49] "AL" "AK" "AZ" "AR" ...
  ..$ aou  : chr [1:569] "12" "20" "30" "40" ...

betapart documentation built on May 2, 2019, 6:10 p.m.